1) which of the following is not found in native state? a) pt b) cu c) Au d) Na 2) copper pyrites ore is concentrated by a) electromagnetic method b) gravity separation method c) froth flotation method d) all of these
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d all of these.............
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which of the following is not found in native state
d) Na
2) copper pyrites ore is concentrated by c. Froth floation method
Explanation:
- Platinum gold are examples of noble metals. As a result of this their fine found in native state. The reactivity of copper is much less as compared to that of sodium. As a result of this sodium is never found in native state
- copper pyrites is an example of a rock which is made up of sulphur. Most of the ore which is made up of sulphur usually reacts and is separated by the process of froth flotation method
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Identify the cation and anion in a given salt : 1.physical ...
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